For your adaptor you can either use a £6 USB to OBD2 adaptor plus £6 16 to 20 pin adaptor (note - INPA will not be speaking OBD2, it speaks DS2, a propriety language - you are only making use of the tranciever to convert PC chat to car chat)

This will not allow you to talk to some modules, notably ABS and KOMBI (cluster).

If you want to talk to those two or three modules, you will need an £85 ADS compliant adaptor, which will require a laptop with a genuine serial port.

USB-RS232 convertors with ADS will not work, becuase DTR support is needed.

PCMCIA-RS232 with ADS could be made to work, if you are willing to format your hard disk to disable AHCI and BIOS supports changing the IRQ and address of the harware COM port. Win 98 also offers this feature actually inside Windows.

All are valid configurations. (2) has limitations on KOMBI/ASC/ABS support.

OK

my interface is 16 pin OBD2 not an ADS adaptor, im just saying INPA will connect to the 16 pin OBD2 port on the car and run in ADS mode aswell if you are using serial connection, there is no need to change to OBD from ADS in INPA if you are using an OBD2 16 pin serial interface...

my interface is 16 pin OBD2 not an ADS adaptor, im just saying INPA will connect to the 16 pin OBD2 port on the car and run in ADS mode aswell if you are using serial connection, there is no need to change to OBD from ADS in INPA if you are using an OBD2 16 pin serial interface...

That is good to hear. It helps me learn about the D2 echo.

I think OBD and USB support was added some time after ADS. Options for changing COM port and spoofing the battery detection, came with it, modernising it.